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- Pyrargyrite abstract "Pyrargyrite is a sulfosalt mineral consisting of silver sulfantimonide, Ag3SbS3. Known also as dark red silver ore or ruby silver, it is an important source of the metal.It is closely allied to, and isomorphous with, the corresponding sulfarsenide known as proustite or light red silver ore. Ruby silver or red silver ore (German Rotgiiltigerz) was mentioned by Georg Agricola in 1546, but the two species so closely resemble one another that they were not completely distinguished until chemical analyses of both were made.Both crystallize in the ditrigonal pyramidal (hemimorphic-hemihedral) class of the rhombohedral system, possessing the same degree of symmetry as tourmaline. Crystals are perfectly developed and are usually prismatic in habit; they are frequently attached at one end, the hemimorphic character being then evident by the fact that the oblique striations on the prism faces are directed towards one end only of the crystal. Twinning according to several laws is not uncommon. The hexagonal prisms of pyrargyrite are usually terminated by a low hexagonal pyramid or by a drusy basal plane.The color of pyrargyrite is usually greyish-black and the lustre metallic-adamantine; large crystals are opaque, but small ones and thin splinters are deep ruby-red by transmitted light, hence the name, from the Greek pyr and argyros, "fire-silver" in allusion to color and silver content, given by E. F. Glocker in 1831. The streak is purplish-red, thus differing markedly from the scarlet streak of proustite and affording a ready means of distinguishing the two minerals. The Mohs hardness is 2.75, and the specific gravity 5.85. The refractive indices (nω=3.084 nε=2.881) and birefringence (δ=0.203) are very high. There is no very distinct cleavage and the fracture is conchoidal. The mineral occurs in metalliferous veins with calcite, argentiferous galena, native silver, native arsenic, &c. The best crystallized specimens are from Sankt Andreasberg in the Harz, Freiberg in Saxony, and Guanajuato in Mexico. It is not uncommon in many silver mines in the United States, but rarely as distinct crystals; and it has been found in some Cornish mines.Although the red silver ores afford a good example of isomorphism, they rarely form mixtures; pyrargyrite rarely contains as much as 3% of arsenic replacing antimony, and the same is true of antimony in proustite. Dimorphous with pyrargyrite and proustite respectively are the rare monoclinic species pyrostilpnite or fireblende (Ag3SbS3) and xanthoconite (Ag3AsS3): these four minerals thus form an isodimorphous group.".
- Pyrargyrite thumbnail Mineraly.sk_-_pyrargyrit.jpg?width=300.
- Pyrargyrite wikiPageExternalLink pyrargyr.htm.
- Pyrargyrite wikiPageExternalLink min-3313.html.
- Pyrargyrite wikiPageExternalLink Pyrargyrite.shtml.
- Pyrargyrite wikiPageID "1687872".
- Pyrargyrite wikiPageRevisionID "598191453".
- Pyrargyrite category Sulfosalt_minerals.
- Pyrargyrite cleavage "Sometimes distinct in three directions forming rhombohedrons".
- Pyrargyrite color "dark red to red-black".
- Pyrargyrite formula "Ag3SbS3".
- Pyrargyrite fracture "conchoidal".
- Pyrargyrite gravity "approximately 5.8".
- Pyrargyrite habit "Include prismatic crystals with rhombohedral and scalenohedral faces forming terminations. There is no perpendicular mirror plane and therefore a hemimorphic crystal can be seen, in some rare examples, with differing terminations at the top and bottom of the crystal. Typical crystals are poorly formed and modified heavily by secondary faces. Also found massive.".
- Pyrargyrite hasPhotoCollection Pyrargyrite.
- Pyrargyrite luster "adamantine".
- Pyrargyrite mohs "2.5".
- Pyrargyrite name "Pyrargyrite".
- Pyrargyrite other "darkens upon exposure to light; crystals are frequently striated".
- Pyrargyrite refractive "translucent to nearly opaque".
- Pyrargyrite streak "dark cherry red".
- Pyrargyrite strunz "2".
- Pyrargyrite system "180.0".
- Pyrargyrite wordnet_type synset-mineral-noun-1.
- Pyrargyrite subject Category:Antimony_minerals.
- Pyrargyrite subject Category:Silver_minerals.
- Pyrargyrite subject Category:Sulfosalt_minerals.
- Pyrargyrite subject Category:Trigonal_minerals.
- Pyrargyrite type Abstraction100002137.
- Pyrargyrite type AntimonyMinerals.
- Pyrargyrite type Material114580897.
- Pyrargyrite type Matter100020827.
- Pyrargyrite type Mineral114662574.
- Pyrargyrite type Part113809207.
- Pyrargyrite type PhysicalEntity100001930.
- Pyrargyrite type Relation100031921.
- Pyrargyrite type SilverMinerals.
- Pyrargyrite type Substance100019613.
- Pyrargyrite type SulfosaltMinerals.
- Pyrargyrite type TrigonalMinerals.
- Pyrargyrite type ChemicalSubstance.
- Pyrargyrite type Mineral.
- Pyrargyrite type ChemicalObject.
- Pyrargyrite type Thing.
- Pyrargyrite comment "Pyrargyrite is a sulfosalt mineral consisting of silver sulfantimonide, Ag3SbS3. Known also as dark red silver ore or ruby silver, it is an important source of the metal.It is closely allied to, and isomorphous with, the corresponding sulfarsenide known as proustite or light red silver ore.".
- Pyrargyrite label "Pirargirita".
- Pyrargyrite label "Pirargirite".
- Pyrargyrite label "Pirargyryt".
- Pyrargyrite label "Pyrargyriet".
- Pyrargyrite label "Pyrargyrit".
- Pyrargyrite label "Pyrargyrite".
- Pyrargyrite label "Pyrargyrite".
- Pyrargyrite label "Пираргирит".
- Pyrargyrite label "濃紅銀鉱".
- Pyrargyrite sameAs Pyrargyrit.
- Pyrargyrite sameAs Pirargirita.
- Pyrargyrite sameAs Pyrargyrite.
- Pyrargyrite sameAs Pirargirite.
- Pyrargyrite sameAs 濃紅銀鉱.
- Pyrargyrite sameAs Pyrargyriet.
- Pyrargyrite sameAs Pirargyryt.
- Pyrargyrite sameAs m.05nh8v.
- Pyrargyrite sameAs Q118134.
- Pyrargyrite sameAs Q118134.
- Pyrargyrite sameAs Pyrargyrite.
- Pyrargyrite wasDerivedFrom Pyrargyrite?oldid=598191453.
- Pyrargyrite depiction Mineraly.sk_-_pyrargyrit.jpg.
- Pyrargyrite isPrimaryTopicOf Pyrargyrite.
- Pyrargyrite name "Pyrargyrite".